Brine worked as a radio journalist, and when 18 years old was one of the BBC's youngest reporters and producers on BBC Local Radio, before working with BBC Radio Surrey and BBC Southern Counties Radio as well as contributing as a freelance reporter to Radio Five Live.[6] He also spent a year working in Chicago with the Tribune Media Group's WGN Radio.[6] He also worked as a business development consultant, and for a golf marketing and publishing business.[6]

Formerly the party's area campaign director for Hampshire, Brine was selected in November 2006 for Winchester, where he has served a deputy chairman (political) of the local Conservative association.[7]

On 5 February 2013, Brine opposed the Marriage (Same Sex Couples) Bill, which aimed to introduce same-sex marriage in England and Wales, asking a question of Rt Hon Tim Loughton positing that the progressive outcome would be to meet the perception that "civil partnerships are somehow not enough...without redefining marriage and mortally offending so many of my—and I am sure his—constituents?"[8]

Speaking to a local newspaper about his vote, Brine said: "This was a free vote as matters of conscience traditionally are. As I said in Parliament, if there is a feeling out there that civil partnerships, which I strongly support, are now somehow not enough the coalition should have produced a green paper to explore options for change. That could have been done in a collegiate way instead of a non-consultation last year leading to a rushed Bill that has horribly divided the entire country and the Government.

"That said, I have received more contact from constituents on this, mostly opposed to the Bill for what it's worth, than any other subject in almost three years and many said to me the coalition should not be spending any time on this and has no mandate for such a major constitutional change. I will be following the Bill extremely closely as it moves into committee."[9]

In 2013, Brine was made a PPS (Parliamentary Private Secretary) to Mike Penning, Minister of State at the Department for Work & Pensions and Minister for Disabled People. As a result, he worked closely with colleagues including Iain Duncan Smith (Conservative) and Steve Webb (Liberal Democrat).[10]

In July 2014, Brine followed Penning to a new Government role, within the Home Office and Ministry of Justice.[11] This followed a number of years spent on the House of Commons Justice Select Committee, chaired by veteran Liberal Democrat MP Sir Alan Beith, where much of Mr Brine's work was centred on rehabilitation. As part of this, Brine took part in a Reducing Reoffending conference which was held in Winchester in early 2014.[12]

Brine was re-adopted by the Winchester Conservatives to contest the seat at the General Election held on 7 May 2015 and was re-elected with a majority of almost 17,000.

Steve Brine's voting history can be viewed online,[16] as can his speeches.[17]

Brine, unlike the vast majority of his conservative colleagues, voted against investigation into the UK's involvement in the Iraq War in November 2016.[18][19] He has voted twice against equal gay rights, including same sex marriage.[20] He voted against allowing terminally ill people to be allowed to have assisted suicide.[21] He has previously voted in support of airstrikes against ISIL in Syria and continued deployment in Afghanistan.[22]

^They Work For You Profile "Formerly the party's area campaign director for Hampshire, Brine was selected in November 2006 for Winchester, where he has served a deputy chairman (political) of the local Conservative association."